Meyer Sound UPJunior UltraCompact VariO, Operating Instructions Manual

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UPJUNIOR OPERATING INSTRUCTIONS
11
You can use the following table as a guide for selecting
cable gauges and circuit breaker ratings for the system’s
operating voltage.
The minimum electrical service amperage required by a
UPJunior loudspeaker system is the sum of the Maximum
Long-Term Continuous Current for each loudspeaker. An
additional 30% above the minimum amperage is recom-
mended to prevent peak voltage drops at the service entry.
NOTE: For best performance, the AC cable
voltage drop should not exceed 10 V, or 10%
at 115 V and 5% at 230 V. Make sure that even with
AC voltage drops that the AC voltage always remains
within the operating window.
ELECTRICAL SAFETY ISSUES
Pay close attention to these important electrical and safety
issues.
■ The UPJunior requires a grounded outlet. Always use a
grounded outlet and plug.
■
Do not use a ground-lifting adapter or cut the AC cable
ground pin.
■ Keep all liquids away from the UPJunior to avoid hazards
from electrical shock.
■ Do not operate the unit if the power cables are frayed or
broken.
■ Do not exceed the current capability of the UPJunior’s
20-amp AC Input connector. When looping loudspeak-
ers, consider the total current draw for all loudspeakers
on the circuit, including the first loudspeaker.
■ Make sure the UPJunior’s AC power cable has the
appropriate power plug (on the other end) for the area in
which you will operate the loudspeaker. In addition, the
AC power cable must be rated for the total current draw
of all loudspeakers looped from the power source.
UPJunior Current Draw
Current Draw 115 V AC 230 V AC 100 V AC
Idle Current 0.448 A rms 0.285 A rms 0.497 A rms
Maximum Long-Term
Continuous Current 2.55 A rms 1.55 A rms 2.75 A rms
Burst Current 2.9 A rms 1.7 A rms 3.2 A rms
Ultimate Short-Term
Peak Current 12.0 A peak 9.0 A peak 13.0 A peak
Inrush Current 15.0 A peak 13.0 A peak 15.0 A peak
Earth ground
Chassis ground